< Wisconsin Flood Warning | Effective 05/02/2026 19:26

Wisconsin Flood Warning | Effective 05/02/2026 19:26

Headline: 
Flood Warning issued May 2 at 9:26PM CDT until May 3 at 7:00PM CDT by NWS Milwaukee/Sullivan WI
Event: 
Flood Warning
Urgency: 
Immediate
Effective: 
May 2, 2026 - 7:26pm
Expires: 
May 3, 2026 - 7:30am
Description: 
...The Flood Warning is extended for the following river in Wisconsin... Rock River Near Lake Koshkonong affecting Rock and Jefferson Counties. ...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Rock River At Afton affecting Rock and Winnebago Counties. Rock River At Newville affecting Rock County. Rock River At Fort Atkinson affecting Jefferson County. ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Rock River at Fort Atkinson. * WHEN...Until tomorrow evening. * IMPACTS...At 16.0 feet, Floodwaters affect some park land and boat launches. * ADDITIONAL DETAILS... - At 9:00 PM CDT Saturday the stage was 16.1 feet. - Bankfull stage is 14.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:00 PM CDT Saturday was 16.2 feet. - Forecast...The river is expected to rise to a crest of 16.1 feet just after midnight tonight. It will then fall below flood stage early tomorrow afternoon. - Flood stage is 16.0 feet. - Flood History...This crest compares to a previous crest of 16.2 feet on 08/29/2007. - http://www.weather.gov/safety/flood
Instruction: 
Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov. The next statement will be issued Sunday morning at 930 AM CDT.
Area Description: 
Jefferson, WI
Forcast Office: 
NWS Milwaukee/Sullivan WI